Lathe chuck support



Patented Feb. 5, 1 952 UNITED STATES PATENT OFFICE i i V e 2584469& e v

LHLATVHE CHUCK SUPPORT I Cliiford E. Terry, San Diego, Calif.'

e Application April 28, 1949, Serial N o. 90,212

4 Claims. (01; 82-34) (Granted under the act of March 3, 1883 as amended--April 30, 1928; 370 0. G. 757) This-invention relates to a chuck support, and moreparticularly to a chuck support for supporting a-'chuck during mounting and demounting from a lathe spindle and during storage of the chuck when not in use.

Heretofore when mounting a chuck on a lathe spindle, considerable diiliculty'has been experienced in aligning the chuck with the spindle so that the female threads on the chuck would easily start on to the male threads of the spindle. This di'fiiculty increases with the size and weight of the chuck, and leads to the'possibility of stripping or cross-threading the threads on either the chuck or the spindle. Furthermore, when demounting a heavy chuck from a lathe, it 'is often necessary to utilizeseveral men'to support the chuck as it leaves the spindle, so that the chuck does'not drop suddennly onto' the guideways of the lathe and damage them It is an object of this invention to provide a chuck support which will obviate the above disadvantages.

It is another object of this invention totprovide a chuck support which enables one operator to mount or demount a chuck of any size without danger to himself or to the equipment.

It is a still further object of this invention to provide a chuck support which can be used to support a chuck duringstorage, to prevent the damaging of the chuck.

Other objects and many of the attendant advantages of thisinvention will be readily appreciated as the same becomes better understood by reference to the following description.

This invention comprises generally a base portion, or pair of spaced parallel runners having on a face of each a V slot adapted to slidably mount on the guideways of a lathe bed. A frame is secured to and extends upwardly from the runners, connecting them together. From the frame a tubular spindle extends over the runners, parallel thereto, and in line with the spindle of the lathe. The tubular spindle is undercut on a portion of its circumference to provide a shoulder over which the jaws of a chuck can be clamped to restrain the chuck from axial movement on the spindle. y

A preferred embodiment of the instant invention has been illustrated in the accompanying drawing, wherein:

Fig. 1 is a perspective View of the instant invention, supporting a chuck partially broken away to show the lathe spindle.

Referring to the drawing, the numeral ll deslgnates two runners having V Slots l2 on the bottom faces thereof, adapted to slidably mount on the guideways !3 of the bed of a lathe M. A frame IE is secured to the runners ll, connecting them together and extending upwardly therefrom. A tubular spindle ll is secured to the frame at !8. The spindle I 'I extends over, and is parallel to, the runners ll and is in line with the threaded spindle !9 of the lathe 14, spindle I'll is thereby in position to support or receive a chuck 24 during the mounting or demounting of the chuck. A portion of the 'circumferen'ce of the spindle H is reduced' at 2l to providea shoulder 22 on the spindle ll over which the jaws 23 of the chuck 24 may be clamped to restrainit from axial movement on the spindle ll.

v u operation To mount the chuck 24 onto the lathe spindle !9, the chuck is first mounted onto the tubular spindle H' of the chuck support and the jaws 23 clamped over the reduced portion 2! of the spindle ll; the shoulder 22 then prevents axial movement of the chuck 24 'in relation to the spindle l'l. A hoistng cable can then be passed through the tubular spindle ll and the chuck and support placed on the lathe 14, the V slots l2 of the runners ll being mounted on the guideways !3 of the lathe bed. The assembly (support and chuck) is then slid along the ways until the threaded bore 26 of the chuck 24 abuts the end of the spindle [9.

The lathe is then started at slow speed and the spindle s screws itself into the chuck bore 26. The runners i I 'slide along the guideways following the lead of the thread on the spindle !9. When 'the chuck` is partially on the spindle !9, the lathe can be stopped, the jaws 23 unclamped, and the chuck support slid away from the chuck and the lathe spindle !9.

For demounting a chuck from the lathe spindle ll, the procedure is reversed. The chuck support is again slid into abutment with the spindle. The chuck is loosened and upon reversing of the lathe, the chuck feeds itself off the spindle I 9 of the lathe and onto the spindle ll of the chuck support.

In practice, it has been found convenient to provide a chuck support for each chuck, even when in storage, so that the chuck is always either mounted on a lathe or on a chuck support.

Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended ing mounting on, and demounting from a lathe comprising a pair of spaced, parallel runners having on a face of each a V slot adapted to *Slidably mount on the gudeways of the bed nf thelathe,

a frame secured to and extending upwardly from said runners and ccnnecting same, and "a tubular i spindle secured to said frame, extending over said runners, parallel thereto, and in line with the spindle of the lathe and adapted te receive ala-the chuck during mounting and demounting, 'said spindle having a shoulder thereon to permit clamping of chuck 'jaws thereover to restra'in the chuck from axial movement.

'2. A *chuck support for supporting a chuck dur ing'mounting on, and demounting from a lathe, comprising a pair of spaced, parallel runners having' on a face -of 'each a V slot adapted to 'slidably mouni', on the guideways "of the bed of the lathe, a "fram'e secured to'and extending upwardly from said'runners 'and 'connecting same, and a spindle secured to `said frame, extendingover said runners,'parallel 'thereto and in line with the spindie of the 'lathe 'and adapted to receive a lathe chuck during mounting and demounting.

3. A chuck support for use With `a lathe having i a threaded spindle, a chuck having a threaded bore mountable on said spindle and including radially adjustable jaws, and spaced guideways parallel to and positioned at a lower level than the spind-le; comprising a pair 'of runners slida-ble on 'said guideways, a frame secured to *and con- 4. necting said runners, and a support spindle carried by said frame in alignment with the lathe spindle and having a portion shaped to enter the bore of said chuck in slidable relation and a reduced portion engageable by said jaws to restrict sliding movement of the chuck on the support spintlle.` v p p 4. A chuck :support for use with a lathe having a threaded spindle, a chuck having a threaded bore mountable on said spindle and including radially adjustable jaws, and spaced guideways 'parallel to and positioned at a lower level than the spindle; comprising a pair of runners slidable on said guideways, a frame secured to and extending upwardly from said runners and a spindle :supported by said frame in alignment with the lathe spindle and having an end portion shaped to enter the bore of the chuck to support the chuck in slidable relation and another portion engageable by said jaws to restrict slidable movement' of :the chuck on the support spindle.

CLIFFORD R.' TERRY.:

REFERENES QITED The following references are of record ?in the ,file oi this patent:

UNITED STATES PATENTS ,Date 

